Product Description
Sigma 24mm f1.8 EX DG Aspherical Macro is one of the EX Series lenses. This lens has a fast F1.8 maximum aperture with macro focusing capability of minimum focusing down to 18cm/7.1inches (reproduction ratio 1:2.7). The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates the floating focus system and uses two aspherical lens elements for minimizing distortion and spherical aberration and astigmatism. Internal focus system eliminates front lens rotation, thus allowing the use of a Perfect Hood and the easy use of polarizing filters. The lens incorporates non-vignetting optical construction, in order to obtain adequate peripheral brightness even at open aperture. This is desirable for digital cameras. The lens also incorporates dual-focus mechanism. It is easy to hold the lens, since focusing ring does not rotate during auto-focus, and yet it provides adequatefocusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this new lens are lead and arsenic free ecological glass.
Customer Reviews:
Amazing!.......2007-08-16
I love this lens. The only time it comes off my D80 is when I need a zoom lens. Otherwise, this is a great almost all in one lens. It is a bit slow in the focusing department compared with my Nikon 18-135 but it is much sharper than all my othe lenses. Produces great bokeh at 1.8
Product Description
This large-aperture wide-angle lens is equipped macro focusing capability with a maximum magnification of 1: 2.7 and fast F1.8 maximum aperture. The use of aspherical lenses are offered for superior peripheral brightness and compensation of aberrations and astigmatism. This is an ideal DG lens for Digital SLR cameras.This lens is capable of Macro photography at minimum focusing down to 18cm (7.1 inch) (reproduction ratio 1: 2.7). It incorporates the floating focus system in order to minimize distortion, spherical aberration and astigmatism, which provide high performance at all shooting distance down to 18 cm (7.1 inch). Reproduction ratio 1: 2.7 and an angle of view of 84.1allow capturing of high quality images not only a subject but also the surrounding scenery.This lens has an advanced optical construction, in order to obtain adequate peripheral brightness at open aperture. Also, the iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background.This lens also incorporates a Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. Also this allows the use of a "Petal-type Hood", which is superior light blocking effect.It incorporates a floating focus system and uses two aspherical lens elements for minimizing distortion, spherical aberration and astigmatism.
Customer Reviews:
Great quality but a little heavy and big........2007-03-08
I wanted a wide angle prime lens that I could take to parties where the shooting distance is always about the same and I could get higher quality pictures than with zoom lenses. Since this lens is fast, f/1.8, it focuses very quickly even in low light. It doesn't have an ultrasonic focusing mechanism, but focus speed is very fast and it has a clutch focusing ring so I can hold the lens and not interfere with the rotation of the focusing ring. The body feels very tight and well put together. The texture and feel are perfect. Picture quality is extremely good. The colors are natural and it's very sharp at 1.8 and is even better at 2.0 and above. Macro is excellent and since it has 9 curved aperature blades, the bokeh looks very pleasing. There is almost no distortion or abberation and focus is accurate. So even though this lens is a bit bigger and heavier than I would like in a prime lens like this, the benefits of brighter viewfinder (due to f/1.8), extemely sharp pictures and very good build quality makes it worthwhile purchase (especially for the price).
Product Description
This large-aperture wide-angle lens is equipped macro focusing capability with a maximum magnification of 1: 2.7 and fast F1.8 maximum aperture. The use of aspherical lenses are offered for superior peripheral brightness and compensation of aberrations and astigmatism. This is an ideal DG lens for Digital SLR cameras.This lens is capable of Macro photography at minimum focusing down to 18cm (7.1 inch) (reproduction ratio 1: 2.7). It incorporates the floating focus system in order to minimize distortion, spherical aberration and astigmatism, which provide high performance at all shooting distance down to 18 cm (7.1 inch). Reproduction ratio 1: 2.7 and an angle of view of 84.1allow capturing of high quality images not only a subject but also the surrounding scenery.This lens has an advanced optical construction, in order to obtain adequateperipheral brightness at open aperture. Also, the iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background. This lens also incorporates a Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. Also this allows the use of a "Petal-type Hood", which is superior light blocking effect.It incorporates a floating focus system and uses two aspherical lens elements for minimizing distortion, spherical aberration and astigmatism.
Product Description
This large-aperture wide-angle lens is equipped macro focusing capability with a maximum magnification of 1: 2.7 and fast F1.8 maximum aperture. The use of aspherical lenses is offered for superior peripheral brightness and compensation of aberrations and astigmatism. This is an ideal DG lens for Digital SLR cameras.
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